open url based on OS

lua/telescope/_extensions/getOS.lua

@@ -0,0 +1,10 @@
+return function()
+    -- ask LuaJIT first
+    if jit then return jit.os end
+
+    -- Unix, Linux variants
+    local fh, _ = assert(io.popen('uname -o 2>/dev/null', 'r'))
+    if fh then return fh:read() end
+
+    return 'Windows'
+end

lua/telescope/_extensions/http.lua

@@ -5,8 +5,15 @@ if not ok then
 end
 
 local list = require 'telescope._extensions.http.list'
+local osname = require 'telescope._extensions.getOS'
 
-local default_opts = { open_url = 'xdg-open %s' }
+local open_url_os = {
+    ['OSX'] = { open_url = 'open %s' },
+    ['Windows'] = { open_url = 'start %s' },
+}
+
+local default_opts = open_url_os[osname()]
+if not default_opts then default_opts = { open_url = 'xdg-open %s' } end
 local opts = {}
 
 return telescope.register_extension {